2. RELEVANCE TO PUBLIC HEALTH 2.1 BACKGROUND AND ENVIRONMENTAL EXPOSURES TO DEET IN THE UNITED STATES Pure DEET is a water-white to amber-color
ثبت نشده
چکیده
Pure DEET is a water-white to amber-color liquid. It is mainly used as a commercial insect or acarid repellent. In 1990, approximately 4 million pounds of the active ingredient DEET was used in commercial products and the average annual domestic use of DEET has been estimated as ranging from 5 to 7 million pounds based on product sales. Aquatic systems appear to be the main environmental sink for this chemical. The largest contribution to DEET in water systems comes from sewage effluents containing the chemical. This contribution results from washing skin and clothing where commercial products have been applied and from recreational activities such as swimming, as well as from absorption and excretion by humans.
منابع مشابه
2. Relevance to Public Health 2.1 Background and Environmental Exposures to Atrazine in the United States
Atrazine is a white, odorless powder (when pure) that is used as an herbicide to stop the growth of broadleaf and grassy weeds in crops such as corn, sugarcane, sorghum, pineapples, and macadamia nuts. It is not found naturally in the environment. It is moderately soluble in water, but is more soluble in organic solvents such as acetone, chloroform, and ethyl acetate. More than 37,000 tons of a...
متن کاملEvaluation of Ziziphora tenuior Essential Oil Repellency Effect Against Blood Feeding of Anopheles maculipennis in Zanjan District
Background and Objective: Anopheles maculipennis is one of the most important species of mosquito that can cause serious public health problems worldwide and applying insecticides and synthetic repellents are the current methods used for its control. The continuous application of these chemicals increases the probability of resistance, reduces insecticide efficiency and causes environmental pro...
متن کامل2. Relevance to Public Health 2.1 Background and Environmental Exposures to Perfluoroalkyls in the United States
Perfluoroalkyls constitute a class of compounds that have been used extensively in surface coating and protectant formulations due to their unique surfactant properties. Major applications have included protectants for paper and cardboard packaging products, carpets, leather products, and textiles that enhance water, grease, and soil repellency. Perfluoroalkyls have also been used as processing...
متن کامل2. Relevance to Public Health 2.1 Background and Environmental Exposures to Cobalt in the United States
Cobalt may be released to the environment by human activities, as well by weathering of rocks and soil. The primary anthropogenic sources of cobalt in the environment are from the burning of fossil fuels, application of cobalt-containing sludge or phosphate fertilizers, mining and smelting of cobalt-containing ores, processing of cobalt-containing alloys, and industries that use or process coba...
متن کامل2. Relevance to Public Health 2.1 Background and Environmental Exposures to Cadmium in the United States
Cadmium occurs in the earth’s crust at a concentration of 0.1–0.5 ppm and is commonly associated with zinc, lead, and copper ores. It is also a natural constituent of ocean water with average levels between <5 and 110 ng/L, with higher levels reported near coastal areas and in marine phosphates and phosphorites. The cadmium concentration of natural surface water and groundwater is usually <1 μg...
متن کامل